static void schedule_delay(uint16_t query_id, const char *buf, size_t buflen,
struct sockaddr *addr, socklen_t addrlen) {
int i;
int found = 0;
struct timeval now;
gettimeofday(&now, 0);
delay_buf_t *delay_buf = &delay_queue[delay_queue_last];
// first search for existed item with query_id and replace it
for (i = delay_queue_first;
i != delay_queue_last;
i = (i + 1) % DELAY_QUEUE_LEN) {
delay_buf_t *delay_buf2 = &delay_queue[i];
if (delay_buf2->id == query_id) {
free_delay(i);
delay_buf = &delay_queue[i];
found = 1;
}
}
delay_buf->id = query_id;
delay_buf->ts = now;
delay_buf->buf = malloc(buflen);
memcpy(delay_buf->buf, buf, buflen);
delay_buf->buflen = buflen;
delay_buf->addr = malloc(addrlen);
memcpy(delay_buf->addr, addr, addrlen);
delay_buf->addrlen = addrlen;
// then append to queue
if (!found) {
delay_queue_last = (delay_queue_last + 1) % DELAY_QUEUE_LEN;
if (delay_queue_last == delay_queue_first) {
free_delay(delay_queue_first);
delay_queue_first = (delay_queue_first + 1) % DELAY_QUEUE_LEN;
}
}
}
static void check_and_send_delay() {
struct timeval now;
int i;
gettimeofday(&now, 0);
for (i = delay_queue_first;
i != delay_queue_last;
i = (i + 1) % DELAY_QUEUE_LEN) {
delay_buf_t *delay_buf = &delay_queue[i];
if (time_diff(delay_buf->ts, now) > empty_result_delay) {
if (-1 == sendto(local_sock, delay_buf->buf, delay_buf->buflen, 0,
delay_buf->addr, delay_buf->addrlen))
ERR("sendto");
free_delay(i);
delay_queue_first = (delay_queue_first + 1) % DELAY_QUEUE_LEN;
} else {
break;
}
}
}
static void check_and_send_delay() {
time_t ts_limit;
int i;
time(&ts_limit);
ts_limit -= EMPTY_RESULT_DELAY;
for (i = delay_queue_first;
i != delay_queue_last;
i = (i + 1) % DELAY_QUEUE_LEN) {
delay_buf_t *delay_buf = &delay_queue[i];
if (delay_buf->ts < ts_limit) {
if (-1 == sendto(local_sock, delay_buf->buf, delay_buf->buflen, 0,
delay_buf->addr, delay_buf->addrlen))
ERR("sendto");
free_delay(i);
delay_queue_first = (delay_queue_first + 1) % DELAY_QUEUE_LEN;
} else {
break;
}
}
}
static void schedule_delay(const char *buf, size_t buflen,
struct sockaddr *addr, socklen_t addrlen) {
time_t now;
time(&now);
delay_buf_t *delay_buf = &delay_queue[delay_queue_last];
delay_buf->ts = now;
delay_buf->buf = malloc(buflen);
memcpy(delay_buf->buf, buf, buflen);
delay_buf->buflen = buflen;
delay_buf->addr = malloc(addrlen);
memcpy(delay_buf->addr, addr, addrlen);
delay_buf->addrlen = addrlen;
delay_queue_last = (delay_queue_last + 1) % DELAY_QUEUE_LEN;
if (delay_queue_last == delay_queue_first) {
free_delay(delay_queue_first);
delay_queue_first = (delay_queue_first + 1) % DELAY_QUEUE_LEN;
}
}
